WO2017213020A1 - Terminal block for electric motor, electric motor, blower device, and method for connecting terminal pin and connection terminal - Google Patents

Terminal block for electric motor, electric motor, blower device, and method for connecting terminal pin and connection terminal Download PDF

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Publication number
WO2017213020A1
WO2017213020A1 PCT/JP2017/020454 JP2017020454W WO2017213020A1 WO 2017213020 A1 WO2017213020 A1 WO 2017213020A1 JP 2017020454 W JP2017020454 W JP 2017020454W WO 2017213020 A1 WO2017213020 A1 WO 2017213020A1
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WIPO (PCT)
Prior art keywords
synthetic resin
terminal
electric motor
terminal block
top surface
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PCT/JP2017/020454
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French (fr)
Japanese (ja)
Inventor
康仁 塩谷
宗忠 佐藤
賢人 日根
Original Assignee
パナソニックＩｐマネジメント株式会社
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Priority to CN201780031970.XA priority Critical patent/CN109155562B/en
Publication of WO2017213020A1 publication Critical patent/WO2017213020A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Definitions

  • the present invention relates to a terminal block for an electric motor, an electric motor, a blower, and a method for connecting a terminal pin and a connection terminal.
  • a configuration in which different metal connections for example, a joint where an aluminum wire and a copper terminal are connected, is coated with a synthetic resin to protect it from electrolytic corrosion.
  • the joint can be protected from external factors such as moisture that accelerates the ionization reaction.
  • the junction part is protected from electric corrosion etc. by the structure which consists of a two-layer synthetic resin.
  • FIG. 9 is a diagram showing a conventional motor terminal block.
  • the lead wire 101 a that is the terminal of the A-phase winding 101 wound with the aluminum wire and the lead wire 102 a that is the terminal of the B-phase winding 102 are metal terminals arranged on the insulator 103. Soldered to 104.
  • the joining portion 105 where the lead wires 101a and 102a and the metal terminal 104 are joined is a two-layer structure in which a polyolefin resin 106 having a low viscosity is provided in the innermost layer and an epoxy resin 107 having a high viscosity is provided in the outermost layer. It coats with the insulating layer 108 by the synthetic resin more than a layer. With this configuration, the joint 105 is protected from moisture and the like.
  • the motor terminal block according to the present invention includes a recess, a synthetic resin injection groove, and a filling amount confirmation groove.
  • the recess has a through hole in the bottom surface for penetrating the terminal pin with which the winding is wound.
  • the synthetic resin injection groove is dug up to the side surface on the starting point side of the recess starting from a position further away from the central axis of the recess than the peripheral edge of the opening top surface of the recess.
  • the filling amount confirmation groove is dug up to the opposite side surface, which is the side surface of the concave portion facing the starting point, with the position facing the starting point across the central axis as the facing starting point. According to this configuration, it is possible to stabilize the amount of the synthetic resin injected into the concave portion, and it is easy to confirm the quality by the filling amount confirmation groove.
  • the joint portion can be coated with a single material, the number of work steps can be reduced, and a high-quality electric motor can be provided by facilitating the management of the application amount and the confirmation of performance.
  • FIG. 1 is a plan view of an electric motor according to an embodiment of the present invention as viewed from the top side.
  • FIG. 2 is a plan view of the terminal block according to the embodiment of the present invention as viewed from the top side.
  • FIG. 3A is an enlarged view of the periphery of the connection portion of the terminal block according to the embodiment of the present invention.
  • FIG. 3B is a side sectional view of the periphery of the connection portion of the terminal block according to the embodiment of the present invention.
  • FIG. 4 is a side sectional view showing a state in which the terminal pins are inserted into the terminal block according to the embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of the concave portion after the synthetic resin is injected according to the embodiment of the present invention.
  • FIG. 6 is a plan view of the state in which the terminal pins and the connection terminals are connected as seen from the top side.
  • FIG. 7 is a partial cross-sectional view of the electric motor in a state where the terminal pins and the connection terminals are connected.
  • FIG. 8 is a side sectional view showing a spiral portion according to a modification.
  • FIG. 9 is a diagram showing a conventional motor terminal block.
  • FIG. 1 is a plan view of the electric motor 20 according to the embodiment as viewed from the top side.
  • the electric motor 20 includes a rotor (not shown) having a rotating shaft, a stator 21 provided on the outer peripheral side of the rotor, and an electric terminal block 1 provided on the top surface side of the stator 21 (hereinafter, terminal block 1). Called).
  • FIG. 1 shows a schematic structure of the electric motor 20, and an outer shell, a rotor, and the like of the electric motor 20 are omitted for convenience.
  • the stator 21 is extended to both sides in the circumferential direction from the yoke portion 22 provided on the outer periphery, the tooth base portion extending from the yoke portion 22 toward the inner peripheral side, and the inner peripheral side tip portion of the tooth base portion.
  • the tooth base is not represented on FIG. 1 because an aluminum wire, which will be described later, is wound around the tooth base.
  • an aluminum wire is wound as a winding 8 via an insulator as an insulating material covering the tooth base.
  • the winding 8 is wound on the terminal pin 7 (see FIG. 4) after being wound around the tooth base. Details of the terminal pin 7 will be described later.
  • the terminal block 1 is provided on the top surface side of the stator 21 with the bottom surface facing the stator 21. Further, the terminal block 1 has a plate-like fan shape in which the outer peripheral shape is substantially the same as the outer peripheral shape of the stator 21 and the inner peripheral shape is substantially the same as the inner peripheral shape of the stator 21.
  • the terminal block 1 includes a through hole 11 into which a terminal pin 7 with a winding 8 is inserted. Details will be described later.
  • FIG. 2 is the top view which looked at the terminal block 1 which concerns on embodiment from the top
  • FIG. 3A is an enlarged view around the connection portion 23 of the terminal block 1 according to the embodiment.
  • FIG. 3B is a side sectional view of the periphery of the connection portion 23 of the terminal block 1 according to the embodiment.
  • the terminal block 1 includes a plurality of connecting portions 23 at the outer peripheral end portion in a fan shape.
  • the number of connection portions 23 is six.
  • the number of connection portions 23 is six.
  • the number of connection portions 23 varies depending on the configuration of the electric motor 20 and the like.
  • the number of connection parts 23 should just be at least one.
  • the connecting portion 23 includes a recess 2, a through hole 11, a synthetic resin injection groove 4, and a filling amount confirmation groove 6.
  • the concave portion 2 has a mortar shape, that is, a hollow inverted truncated cone shape having the axis of the through hole 11 as the central axis x.
  • the recess 2 includes an opening top surface 3 on the top surface side and a bottom surface 24 on the bottom surface side.
  • a through hole 11 is provided as a hole penetrating the bottom surface 24.
  • a terminal pin 7 around which a winding 8 is wound is inserted into the through hole 11. Since the recess 2 has a mortar shape, the diameter of the opening top surface 3 is larger than the diameter of the bottom surface 24. Further, since the through hole 11 is provided in the bottom surface 24, the diameter of the bottom surface 24 is larger than the diameter of the through hole 11.
  • the diameter of the bottom surface 24 is larger than the diameter of the through-hole 11, and the center axis of the bottom surface 24 and the through-hole 11 is made common, so that the synthetic resin for storing the injected synthetic resin is accumulated over the entire circumference of the through-hole 11 in the bottom surface 24.
  • a resin reservoir 12 is provided.
  • the recessed part 2 was made into the shape of a mortar, it is not limited to this.
  • the recess 2 may have a cylindrical shape in which the diameter of the opening top surface 3 and the diameter of the bottom surface 24 are equal.
  • the synthetic resin injection groove 4 has a slope shape that is dug up to the side surface of the concave portion 2 on the side of the starting point 26 starting from a position farther from the central axis x of the concave portion 2 than the peripheral edge 25 of the opening top surface 3 of the concave portion 2.
  • the synthetic resin injection groove 4 becomes deeper as it approaches the recess 2 from the starting point 26.
  • the end of the synthetic resin injection groove 4 on the recess 2 side is connected to the outer peripheral edge of the bottom surface 24.
  • the filling amount confirmation groove 6 was dug up to the opposite side surface 28 which is the side surface on the opposite origin 27 side of the recess 2 with the position facing the origin 26 of the synthetic resin injection groove 4 across the central axis x as the opposite origin 27. It has a slope shape.
  • the depth in which the filling amount confirmation groove 6 is dug is shallower than the synthetic resin injection groove 4.
  • the filling amount confirmation groove 6 is dug so as to be connected to the reverse side surface 28 at a depth of, for example, about 50% of the depth of the concave portion 2.
  • a suppression wall 5 is formed that suppresses the momentum of the flow of the synthetic resin when injected.
  • the groove width 29 gradually increases from the starting point 26 and the opposite starting point 27 toward the concave portion 2 as viewed from the top.
  • the maximum width of the groove width 29 is the diameter of the opening top surface 3 of the recess 2.
  • FIG. 4 is a side sectional view showing a state in which the terminal pins 7 are inserted into the terminal block 1.
  • one end of the terminal pin 7 is entangled with an end of a winding 8 wound around the stator 21.
  • the ends of the wound windings 8 are joined to the terminal pins 7 by the joining solder 9 to form a joint 10.
  • the other end of the terminal pin 7 is fixed to the insulator (see FIG. 7).
  • the terminal pin 7 on which the joint portion 10 is formed is inserted into the through hole 11 from the stator 21 side and pulled out to the top surface side of the terminal block 1. That is, the diameter of the through hole 11 needs to be long enough for the joint 10 to penetrate.
  • the diameter of the through hole 11 is the diameter of the through hole 11 ⁇ (the diameter of the winding 8 ⁇ 2 + the diameter of the terminal pin 7) ⁇ 1.2.
  • the diameter of the winding 8 is the case where the overlapping of the windings 8 is removed. That is, when winding the winding 8 on the terminal pin 7, it is necessary to further increase the diameter of the through hole 11.
  • the diameter of the terminal pin 7 here is the diameter of the cross section of the terminal pin 7 in the direction perpendicular to the central axis x. For example, if the cross section is a circle, the diameter of the circle is the diameter of the terminal pin 7. Further, if the cross section is a polygon, the diameter of the terminal pin 7 is set to the maximum length such as the diagonal of the polygon.
  • the reason why the coefficient is set to 1.2 is to sufficiently secure a clearance 17 that is a gap between the joint portion 10 and the through hole 11.
  • the clearance 17 is increased, so that the surface tension for preventing dripping from the through hole 11 on the synthetic resin 16 (see FIG. 5) injected from the synthetic resin injection groove 4 does not function.
  • the clearance 17 is reduced, the difficulty level when the terminal pin 7 is inserted into the through hole 11 is increased. Therefore, when the terminal pin 7 is inserted into the through hole 11, the joint portion 10 is likely to come into contact with the inner peripheral surface of the through hole 11, and there is a concern that the protection of the winding 8 by the joining solder 9 is insufficient. . Further, the application range of the bonding solder 9 at the lower portion in the axial direction of the bonding portion 10 is less than the lowermost surface 32 of the through hole 11. The reason will be described later.
  • the joint portion 10 penetrates the through hole 11, that is, the terminal pin 7 extends from the bottom surface 24 side of the terminal block 1 toward the opening top surface 3 side (along the central axis x). ) Is inserted (penetration process). Thereafter, the connection terminal 15 is fitted into the end portion of the terminal pin 7 from the opening top surface 3 side. In this state, the end of the terminal pin 7 protrudes further upward than the upper surface 33 of the connection terminal 15. Further, the lower end 34 on the bottom surface side of the connection terminal 15 is located on the same plane as the opening top surface 3. In this state, preparation for connecting the joint 10 and the connection terminal 15 is completed.
  • FIG. 5 is a cross-sectional view of the recess 2 showing the synthetic resin after injection according to the embodiment.
  • connection solder 14 is applied to the upper surfaces 33 of the terminal pins 7 and the connecting terminals 15. Thereby, the terminal pin 7 and the connection terminal 15 are connected by the connecting solder 14. That is, the connection terminal 15 is installed so that the lower end on the bottom surface side of the connection terminal 15 is located on the same plane as the opening top surface 3, and the connection terminal 15 and the terminal pin 7 are soldered with the connection solder 14 (connection) Process).
  • connection solder 14 since the connecting solder 14 completely covers the end portions of the terminal pins 7, it is possible to prevent intrusion of moisture or the like from the gap between the connecting terminal 15 and the bonding solder 9. That is, by covering the joint portion 10 with the connecting solder 14, the joint portion 10 can be protected from moisture and the like. Further, by stacking the connection solder 14 on the connection terminal 15, the connection solder 14 extends from the central opening of the connection terminal 15 to the lower side of the opening top surface 3 along the joint 10 due to the weight of the connection solder 14. Invades.
  • the synthetic resin 16 is injected from the synthetic resin injection groove 4 after the connecting step.
  • the injected synthetic resin 16 is filled in the hatching range 30 (injection process).
  • the synthetic resin 16 can be injected from above the synthetic resin injection groove 4, that is, from the direction of the arrow 31. It is.
  • the injected synthetic resin 16 flows into the bottom surface 24 of the recess 2 to reduce the injection speed. Therefore, it is possible to suppress the generation of voids in the recess 2 when the synthetic resin 16 is filled. Thereby, since the filling amount of the synthetic resin 16 into the recess 2 can be kept constant, it can contribute to quality improvement. Further, as shown in FIG. 3A, since the groove width 29 gradually increases as it approaches the central axis x, the injection pressure diffuses toward the central axis x even if the injection pressure of the synthetic resin 16 is increased. That is, it is possible to prevent the synthetic resin 16 from overflowing in the synthetic resin injection groove 4. Of course, since the injection pressure can be increased, the time required to complete the injection is also shortened.
  • the synthetic resin 16 that has flowed into the bottom surface 24 is deposited on the synthetic resin reservoir 12 by the suppression wall 5 while diffracting the terminal pin 7.
  • the synthetic resin 16 deposited on the synthetic resin reservoir portion 12 is filled from the bottom surface 24 in the upper part of the central axis x direction, that is, in the direction of the opening top surface 3.
  • the synthetic resin 16 flows out from the filling amount confirmation groove 6 and bulges upward from the opening top surface 3.
  • the synthetic resin 16 bulges upward from the opening top surface 3.
  • a portion of the injected synthetic resin 16 that bulges upward from the opening top surface 3 is referred to as a synthetic resin bulge portion 35.
  • the synthetic resin bulge 35 is preferably from the lower end 34 of the connection terminal 15 to a position 20% of the thickness of the connection terminal 15, more preferably to the upper surface 33 of the connection terminal 15, or between the connection terminal 15 and the connection solder 14. It is good to swell to the interface. Thereby, for example, even if the connection terminal 15 is slightly deformed, the opening top surface 3 and the lower end 34 of the connection terminal 15 are not coplanar, and a gap is generated between the opening top surface 3 and the connection terminal 15. The gap can be filled with the synthetic resin 16.
  • the suppression wall 5 is provided, even if the injection pressure of the synthetic resin 16 is increased, the momentum of the synthetic resin 16 can be suppressed by the suppression wall 5. For this reason, by increasing the injection pressure, it is possible to suppress the synthetic resin 16 from rushing from the filling amount confirmation groove 6 and overflowing in the outer peripheral direction.
  • the filling amount confirmation groove 6 is shallower than the synthetic resin injection groove 4, the required amount of the synthetic resin 16 is reduced, which contributes to cost reduction.
  • the synthetic resin 16 with a reduced injection speed flows into the clearance 17 formed by the joint 10 and the through hole 11.
  • the synthetic resin 16 that has flowed in then wraps the joint 10 over the entire circumference.
  • the size of the clearance 17 is set to an appropriate size. Therefore, the surface tension acts on the synthetic resin 16 that flows into the clearance 17 and wraps the joint 10 over the entire circumference. Therefore, leakage of the synthetic resin 16 downward from the through hole 11 can be prevented.
  • the range of the solder 9 for joining of the joint portion 10 is the lowermost surface 32 of the through hole 11, so that the lower end of the joint portion 10 is completely encased by the synthetic resin 16. For this reason, the junction part 10 can be reliably protected from moisture and the like, and quality can be improved.
  • a filling amount confirmation groove 6 is provided opposite to the synthetic resin injection groove 4, and the opposed starting point 27 is further away from the central axis x than the outermost periphery of the connection terminal 15. Therefore, it is possible to visually confirm whether or not a sufficient amount of the synthetic resin 16 is filled in the concave portion 2, the synthetic resin injection groove 4, and the filling amount confirmation groove 6. That is, it is possible to prevent a gap from being formed on the lower surface of the connection terminal 15 due to insufficient filling of the synthetic resin 16.
  • the synthetic resin 16 is injected after the connection terminal 15 is solder-connected to the terminal pin 7.
  • the synthetic resin 16 is plastically deformed by the heat of the connecting solder 14. This is because the heat-resistant temperature of the synthetic resin is generally lower than the melting temperature of the solder. That is, if the connection terminal 15 is soldered to the terminal pin 7 after the synthetic resin 16 is injected, the plastic resin deformation of the synthetic resin 16 may hinder the original function.
  • FIG. 6 is a plan view of the state in which the terminal pins 7 and the connection terminals 15 are connected as seen from the top side.
  • FIG. 7 is a partial cross-sectional view of the electric motor 20 in a state where the terminal pins 7 and the connection terminals 15 are connected. The partial cross section in FIG. 7 is taken along the line AA in FIG.
  • the electric motor provided with the terminal block 1 according to the present invention can be used as an electric motor such as a blower.
  • a blower As an air blower, a fan, a ventilation fan, etc. are mentioned, for example.
  • FIG. 8 is a side sectional view showing the spiral portion 13 of the recess 2 according to a modification.
  • the recess 2 includes a spiral portion 13 on the side surface in the range from the opening top surface 3 to the bottom surface 24.
  • the shape of the spiral portion 13 for example, the shape shown in FIG. 8, that is, any material that promotes the movement of the injected synthetic resin 16 from the opening top surface 3 side toward the bottom surface 24 direction may be used. That is, the unevenness of the spiral portion 13 and the interval between the spiral grooves are not limited.
  • the movement of the synthetic resin 16 to the bottom surface 24 when the synthetic resin 16 is injected becomes smooth. Thereby, generation
  • the terminal block 1 includes two grooves, a synthetic resin injection groove 4 and a filling amount confirmation groove 6.
  • a synthetic resin injection groove 4 for example, by providing the spiral portion 13 or the like in the concave portion 2, if the generation of voids can be suppressed when the synthetic resin 16 is injected into the concave portion 2, there is only one groove. There may be.
  • the terminal block 1 is provided such that the synthetic resin injection groove 4 and the filling amount confirmation groove 6 face each other with the central axis x interposed therebetween.
  • the synthetic resin 16 injected from the synthetic resin injection groove 4 is filled into the recess 2 and then flows into the filling amount confirmation groove 6, the synthetic resin injection groove 4 and the filling amount confirmation groove 6 are configured. It does not have to be provided opposite to.
  • the motor terminal block or the electric motor according to the present invention is useful as a motor terminal block or an electric motor used for home appliances and the like because it can protect the junction of dissimilar metals.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

A terminal block (1) for an electric motor according to the present invention is equipped with: recesses (2) in the base surface (24) of which is provided a through-hole (11) for inserting a terminal pin (7) on which a winding wire (8) is wound; synthetic resin injection grooves (4) which, when a position farther away from the center axis (x) of the recesses (2) than the rim of the top surface (3) of the opening of the recesses (2) is taken as the origination point, are excavated to the side surface on the origination-point side of the recesses (2); and filling amount confirmation grooves (6) which, when a position opposing the origination point with the center axis (x) therebetween is taken as the opposing origination point, are excavated to the opposite-side surface, which is the side surface on the opposing-origination-point side of the recesses (2).

Description

電動機用端子台、電動機、送風装置、及び端子ピンと接続端子との接続方法Electric motor terminal block, electric motor, blower, and connection method between terminal pin and connection terminal
　本発明は、電動機用端子台、電動機、送風装置、及び端子ピンと接続端子との接続方法に関するものである。 The present invention relates to a terminal block for an electric motor, an electric motor, a blower, and a method for connecting a terminal pin and a connection terminal.
　従来、異種金属接続、例えばアルミニウム線と銅端子などが接続した接合部において、接合部を合成樹脂でコーティングして、電食から保護する構成が知られている。この構成によれば、イオン化反応を加速させる湿気などの外的要因から接合部を保護できる。例えば、特許文献１では、二層の合成樹脂からなる構成により、接合部を電食などから保護している。 Conventionally, a configuration in which different metal connections, for example, a joint where an aluminum wire and a copper terminal are connected, is coated with a synthetic resin to protect it from electrolytic corrosion. According to this configuration, the joint can be protected from external factors such as moisture that accelerates the ionization reaction. For example, in patent document 1, the junction part is protected from electric corrosion etc. by the structure which consists of a two-layer synthetic resin.
　以下、その構成について図９を参照しながら説明する。 Hereinafter, the configuration will be described with reference to FIG.
　図９は、従来の電動機用端子台を示す図である。図９に示すように、アルミニウム線により巻回されたＡ相巻線１０１の端末である引き出し線１０１ａ及びＢ相巻線１０２の端末である引き出し線１０２ａは、インシュレータ１０３上に配置された金属端子１０４にはんだ接合される。この引き出し線１０１ａ、１０２ａと金属端子１０４が接合された接合部１０５は、最内層に粘度の低いポリオレフィン（Ｐｏｌｙｏｌｅｆｉｎ）系樹脂１０６、最外層に粘度の高いエポキシ（Ｅｐｏｘｙ）系樹脂１０７を設けた二層以上の合成樹脂による絶縁層１０８でコーティングされる。この構成によって、接合部１０５を湿気などから保護している。 FIG. 9 is a diagram showing a conventional motor terminal block. As shown in FIG. 9, the lead wire 101 a that is the terminal of the A-phase winding 101 wound with the aluminum wire and the lead wire 102 a that is the terminal of the B-phase winding 102 are metal terminals arranged on the insulator 103. Soldered to 104. The joining portion 105 where the lead wires 101a and 102a and the metal terminal 104 are joined is a two-layer structure in which a polyolefin resin 106 having a low viscosity is provided in the innermost layer and an epoxy resin 107 having a high viscosity is provided in the outermost layer. It coats with the insulating layer 108 by the synthetic resin more than a layer. With this configuration, the joint 105 is protected from moisture and the like.
特開２０１３－１８８０４８号公報JP 2013-188048 A
　しかしながら、このような従来の二層以上の合成樹脂からなる構成においては、合成樹脂材料点数の増加に加え、二度以上の重ね塗りが必要であるため作業工数が増加するというコスト的課題があった。他方、コーティングにおいては、合成樹脂塗布量の細かい管理に加え、塗布の出来栄えが粘度の高さに左右されるおそれがあるという品質的な課題があった。 However, in such a conventional structure composed of two or more layers of synthetic resin, in addition to the increase in the number of synthetic resin materials, there is a cost problem that the number of work steps increases because it requires two or more repeated coatings. It was. On the other hand, in the coating, in addition to fine control of the amount of synthetic resin applied, there is a quality problem that the quality of the application may depend on the viscosity.
　そして、この目的を達成するために、本発明に係る電動機用端子台は、凹部と合成樹脂注入溝と充填量確認溝とを備える。凹部は、巻線が絡げられた端子ピンを貫通するための貫通孔を底面に設けている。合成樹脂注入溝は、凹部の開口天面における周縁よりもさらに凹部の中心軸から離れた位置を起点として凹部の起点側の側面まで掘り込まれている。充填量確認溝は、起点と中心軸を挟んで対向する位置を対向起点として凹部の対向起点側の側面である逆側面まで掘り込まれている。この構成によれば、凹部に注入する合成樹脂量の安定化が図れると共に、充填量確認溝により出来栄え確認が容易になる。 In order to achieve this object, the motor terminal block according to the present invention includes a recess, a synthetic resin injection groove, and a filling amount confirmation groove. The recess has a through hole in the bottom surface for penetrating the terminal pin with which the winding is wound. The synthetic resin injection groove is dug up to the side surface on the starting point side of the recess starting from a position further away from the central axis of the recess than the peripheral edge of the opening top surface of the recess. The filling amount confirmation groove is dug up to the opposite side surface, which is the side surface of the concave portion facing the starting point, with the position facing the starting point across the central axis as the facing starting point. According to this configuration, it is possible to stabilize the amount of the synthetic resin injected into the concave portion, and it is easy to confirm the quality by the filling amount confirmation groove.
　本発明によれば、単一材料で接合部をコーティングできるため作業工数を低減でき、塗布量の管理と出来栄え確認を容易化することで高品質な電動機を提供することができる。 According to the present invention, since the joint portion can be coated with a single material, the number of work steps can be reduced, and a high-quality electric motor can be provided by facilitating the management of the application amount and the confirmation of performance.
図１は、本発明の実施の形態に係る電動機を天面側から見た平面図である。FIG. 1 is a plan view of an electric motor according to an embodiment of the present invention as viewed from the top side. 図２は、本発明の実施の形態に係る端子台を天面側から見た平面図である。FIG. 2 is a plan view of the terminal block according to the embodiment of the present invention as viewed from the top side. 図３Ａは、本発明の実施の形態に係る端子台の接続部周辺の拡大図である。FIG. 3A is an enlarged view of the periphery of the connection portion of the terminal block according to the embodiment of the present invention. 図３Ｂは、本発明の実施の形態に係る端子台の接続部周辺の側断面図である。FIG. 3B is a side sectional view of the periphery of the connection portion of the terminal block according to the embodiment of the present invention. 図４は、本発明の実施の形態に係る端子台に端子ピンを挿入した状態を示す側断面図である。FIG. 4 is a side sectional view showing a state in which the terminal pins are inserted into the terminal block according to the embodiment of the present invention. 図５は、本発明の実施の形態に係る合成樹脂注入後を示す凹部の断面図である。FIG. 5 is a cross-sectional view of the concave portion after the synthetic resin is injected according to the embodiment of the present invention. 図６は、端子ピンと接続端子とを接続した状態を天面側から見た平面図である。FIG. 6 is a plan view of the state in which the terminal pins and the connection terminals are connected as seen from the top side. 図７は、端子ピンと接続端子とを接続した状態の電動機の部分断面図である。FIG. 7 is a partial cross-sectional view of the electric motor in a state where the terminal pins and the connection terminals are connected. 図８は、変形例に係る螺旋部を示す側断面図である。FIG. 8 is a side sectional view showing a spiral portion according to a modification. 図９は、従来の電動機用端子台を示す図である。FIG. 9 is a diagram showing a conventional motor terminal block.
　以下、本発明の実施の形態について図面を参照しながら説明する。なお、以下の実施の形態は、本発明を具体化した一例であって、本発明の技術的範囲を限定するものではない。また、全図面を通して、同一の部位については同一の符号を付して二度目以降の説明を省略している。さらに、各図面において、本発明に直接には関係しない各部の詳細については説明を省略している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention. In addition, throughout the drawings, the same portions are denoted by the same reference numerals, and the second and subsequent descriptions are omitted. Furthermore, in each drawing, the description of the details of each part not directly related to the present invention is omitted.
　（実施の形態）
　本発明の第１の実施の形態について、図面を参照しながら説明する。 (Embodiment)
A first embodiment of the present invention will be described with reference to the drawings.
　まず、図１を用いて本実施の形態に係る電動機２０について説明する。なお図１は、実施の形態に係る電動機２０を天面側から見た平面図である。 First, the electric motor 20 according to the present embodiment will be described with reference to FIG. FIG. 1 is a plan view of the electric motor 20 according to the embodiment as viewed from the top side.
　電動機２０は、回転軸を備えたロータ（図示せず）と、ロータの外周側に設けられたステータ２１と、ステータ２１の天面側に設けられた電動機用端子台１（以後、端子台１と称する）を備えている。なお、図１は、電動機２０の概略構造を示すものであり、電動機２０の外郭やロータ等は便宜上省略している。 The electric motor 20 includes a rotor (not shown) having a rotating shaft, a stator 21 provided on the outer peripheral side of the rotor, and an electric terminal block 1 provided on the top surface side of the stator 21 (hereinafter, terminal block 1). Called). FIG. 1 shows a schematic structure of the electric motor 20, and an outer shell, a rotor, and the like of the electric motor 20 are omitted for convenience.
　ステータ２１は、外周に設けられた継鉄部２２と、継鉄部２２から内周側に向けて延設された歯基部と、歯基部の内周側先端部から周方向両側に延設された鍔部１８とを備えた複数のＴ字形状部を有する。なお歯基部は、後述のアルミ線が巻回されているため図１上には表現されていない。 The stator 21 is extended to both sides in the circumferential direction from the yoke portion 22 provided on the outer periphery, the tooth base portion extending from the yoke portion 22 toward the inner peripheral side, and the inner peripheral side tip portion of the tooth base portion. A plurality of T-shaped portions provided with a flange portion 18; The tooth base is not represented on FIG. 1 because an aluminum wire, which will be described later, is wound around the tooth base.
　Ｔ字形状部には、歯基部を覆う絶縁材としてのインシュレータを介してアルミ線が巻線８として巻回されている。 In the T-shaped part, an aluminum wire is wound as a winding 8 via an insulator as an insulating material covering the tooth base.
　巻線８は、歯基部に巻回された後に端部を端子ピン７（図４参照）に絡げられる。端子ピン７の詳細については後述する。 The winding 8 is wound on the terminal pin 7 (see FIG. 4) after being wound around the tooth base. Details of the terminal pin 7 will be described later.
　端子台１は、底面をステータ２１に対向させてステータ２１の天面側に設けられる。また、端子台１は、外周形状をステータ２１の外周形状と、内周形状をステータ２１の内周形状と、それぞれほぼ一致させた板状の扇形状を有する。端子台１は、巻線８が絡げられた端子ピン７を挿入する貫通孔１１を備えている。詳細については後述する。 The terminal block 1 is provided on the top surface side of the stator 21 with the bottom surface facing the stator 21. Further, the terminal block 1 has a plate-like fan shape in which the outer peripheral shape is substantially the same as the outer peripheral shape of the stator 21 and the inner peripheral shape is substantially the same as the inner peripheral shape of the stator 21. The terminal block 1 includes a through hole 11 into which a terminal pin 7 with a winding 8 is inserted. Details will be described later.
　続いて、図２、図３Ａ及び図３Ｂを用いて端子台１について説明する。なお図２は、実施の形態に係る端子台１を天面側から見た平面図である。図３Ａは、実施の形態に係る端子台１の接続部２３周辺の拡大図である。図３Ｂは、実施の形態に係る端子台１の接続部２３周辺の側断面図である。 Subsequently, the terminal block 1 will be described with reference to FIGS. 2, 3A and 3B. In addition, FIG. 2 is the top view which looked at the terminal block 1 which concerns on embodiment from the top | upper surface side. FIG. 3A is an enlarged view around the connection portion 23 of the terminal block 1 according to the embodiment. FIG. 3B is a side sectional view of the periphery of the connection portion 23 of the terminal block 1 according to the embodiment.
　図２に示すように、端子台１は、扇形状における外周端部に複数の接続部２３を備える。本実施の形態では、接続部２３の数は６つある、なお、本実施の形態では接続部２３の数を６つとしたが、電動機２０の構成などにより異なるため、これに限定されない。例えば、接続部２３の数は、少なくとも１つであればよい。 As shown in FIG. 2, the terminal block 1 includes a plurality of connecting portions 23 at the outer peripheral end portion in a fan shape. In the present embodiment, the number of connection portions 23 is six. In the present embodiment, the number of connection portions 23 is six. However, the number of connection portions 23 varies depending on the configuration of the electric motor 20 and the like. For example, the number of connection parts 23 should just be at least one.
　接続部２３は、図３Ａ及び図３Ｂに示すように、凹部２と、貫通孔１１と、合成樹脂注入溝４と、充填量確認溝６とを備える。 As shown in FIGS. 3A and 3B, the connecting portion 23 includes a recess 2, a through hole 11, a synthetic resin injection groove 4, and a filling amount confirmation groove 6.
　凹部２は、すり鉢形状、言い換えると貫通孔１１の軸を中心軸ｘとした中空の逆円錐台形状を有する。凹部２は、天面側に開口天面３を、底面側に底面２４を備える。また底面２４に貫通する孔としての貫通孔１１を備える。貫通孔１１には、巻線８が絡げられた端子ピン７が挿入される。凹部２はすり鉢形状であるので、開口天面３の径は底面２４の径よりも大きい。また、貫通孔１１は底面２４に設けられているため、底面２４の径は貫通孔１１の径よりも大きい。底面２４の径が貫通孔１１の径より大きく、さらに底面２４と貫通孔１１の中心軸を共通にすることで、底面２４において貫通孔１１の全周にわたって、注入した合成樹脂を溜めるための合成樹脂溜まり部１２が設けられる。 The concave portion 2 has a mortar shape, that is, a hollow inverted truncated cone shape having the axis of the through hole 11 as the central axis x. The recess 2 includes an opening top surface 3 on the top surface side and a bottom surface 24 on the bottom surface side. A through hole 11 is provided as a hole penetrating the bottom surface 24. A terminal pin 7 around which a winding 8 is wound is inserted into the through hole 11. Since the recess 2 has a mortar shape, the diameter of the opening top surface 3 is larger than the diameter of the bottom surface 24. Further, since the through hole 11 is provided in the bottom surface 24, the diameter of the bottom surface 24 is larger than the diameter of the through hole 11. The diameter of the bottom surface 24 is larger than the diameter of the through-hole 11, and the center axis of the bottom surface 24 and the through-hole 11 is made common, so that the synthetic resin for storing the injected synthetic resin is accumulated over the entire circumference of the through-hole 11 in the bottom surface 24. A resin reservoir 12 is provided.
　なお、本実施の形態では、凹部２はすり鉢形状としたがこれに限定されない。例えば、凹部２は、開口天面３の径と底面２４の径が等しい円柱形状であってもよい。 In addition, in this Embodiment, although the recessed part 2 was made into the shape of a mortar, it is not limited to this. For example, the recess 2 may have a cylindrical shape in which the diameter of the opening top surface 3 and the diameter of the bottom surface 24 are equal.
　合成樹脂注入溝４は、凹部２の開口天面３における周縁２５よりもさらに凹部２の中心軸ｘから離れた位置を起点２６として、凹部２の起点２６側の側面まで掘り込まれた斜面形状を有する。つまり、合成樹脂注入溝４は、起点２６から凹部２に近づくにつれて、溝が深くなる。本実施の形態では、合成樹脂注入溝４の凹部２側の端部は底面２４の外周縁と接続されている。 The synthetic resin injection groove 4 has a slope shape that is dug up to the side surface of the concave portion 2 on the side of the starting point 26 starting from a position farther from the central axis x of the concave portion 2 than the peripheral edge 25 of the opening top surface 3 of the concave portion 2. Have In other words, the synthetic resin injection groove 4 becomes deeper as it approaches the recess 2 from the starting point 26. In the present embodiment, the end of the synthetic resin injection groove 4 on the recess 2 side is connected to the outer peripheral edge of the bottom surface 24.
　充填量確認溝６は、合成樹脂注入溝４の起点２６と中心軸ｘを挟んで対向する位置を対向起点２７として、凹部２の対向起点２７側の側面である逆側面２８まで掘り込まれた斜面形状を有する。なお、本実施の形態において、充填量確認溝６の掘り込まれる深さは、合成樹脂注入溝４よりも浅くしている。充填量確認溝６を、例えば凹部２の深さの５０％程度の深さの位置で逆側面２８と接続するように掘り込むことで、逆側面２８には、合成樹脂注入溝４から合成樹脂を注入した際にこの合成樹脂の流れの勢いを抑える抑制壁５が形成される。 The filling amount confirmation groove 6 was dug up to the opposite side surface 28 which is the side surface on the opposite origin 27 side of the recess 2 with the position facing the origin 26 of the synthetic resin injection groove 4 across the central axis x as the opposite origin 27. It has a slope shape. In the present embodiment, the depth in which the filling amount confirmation groove 6 is dug is shallower than the synthetic resin injection groove 4. The filling amount confirmation groove 6 is dug so as to be connected to the reverse side surface 28 at a depth of, for example, about 50% of the depth of the concave portion 2. A suppression wall 5 is formed that suppresses the momentum of the flow of the synthetic resin when injected.
　図３Ａに示すように、合成樹脂注入溝４及び充填量確認溝６において、溝幅２９は、天面視にして起点２６及び対向起点２７から凹部２に近づくにつれて漸次広くなっている。但し、溝幅２９の最大幅は凹部２の開口天面３の径とする。 As shown in FIG. 3A, in the synthetic resin injection groove 4 and the filling amount confirmation groove 6, the groove width 29 gradually increases from the starting point 26 and the opposite starting point 27 toward the concave portion 2 as viewed from the top. However, the maximum width of the groove width 29 is the diameter of the opening top surface 3 of the recess 2.
　続いて、図４を用いて端子台１に端子ピン７を貫通させて接続端子１５を設置した状態について説明する。なお図４は、端子台１に端子ピン７を挿入した状態を示す側断面図である。 Subsequently, a state in which the connection pins 15 are installed through the terminal pins 7 through the terminal block 1 will be described with reference to FIG. FIG. 4 is a side sectional view showing a state in which the terminal pins 7 are inserted into the terminal block 1.
　図４に示すように、端子ピン７の一端には、ステータ２１に巻回された巻線８の端部が絡げられている。絡げられた巻線８の端部は、接合用はんだ９により端子ピン７に接合されて接合部１０を形成する。また、端子ピン７の他端は、インシュレータに固定されている（図７参照）。接合部１０が形成された端子ピン７は、ステータ２１側から貫通孔１１に挿入され、端子台１の天面側に引き出される。つまり貫通孔１１の径は、接合部１０が貫通できるだけの長さが必要となる。本実施の形態では、貫通孔１１の径は、貫通孔１１の径≧（巻線８の径×２＋端子ピン７の径）×１．２とする。ここで１．２は係数であり、巻線８の径は、巻線８の重なりを除いた場合である。つまり端子ピン７に巻線８を重ねて巻く場合にはさらに貫通孔１１の径を大きくする必要がある。また、ここでいう端子ピン７の径とは、中心軸ｘに垂直な方向における端子ピン７の断面の径のことである。例えば、断面が円であれば、その円の直径を端子ピン７の径とする。また、断面が多角形であれば、その多角形の対角など長さが最大となる値を端子ピン７の径とする。なお、係数を１．２としたのは、接合部１０と貫通孔１１の隙間であるクリアランス１７を十分に確保するためである。係数を大きくするとクリアランス１７が大きくなるため、合成樹脂注入溝４から注入される合成樹脂１６（図５参照）に貫通孔１１からの滴下を防止するための表面張力が機能しなくなる。一方、クリアランス１７を小さくすると端子ピン７の貫通孔１１への挿入時の難易度が上がる。そのため、端子ピン７を貫通孔１１に挿入する際に、接合部１０が貫通孔１１の内周面に接触しやすくなり、接合用はんだ９による巻線８の保護が不十分となる懸念が生じる。また、接合部１０の軸方向下部における接合用はんだ９の塗布範囲に関しては、貫通孔１１の最下面３２未満とする。理由については後述する。 As shown in FIG. 4, one end of the terminal pin 7 is entangled with an end of a winding 8 wound around the stator 21. The ends of the wound windings 8 are joined to the terminal pins 7 by the joining solder 9 to form a joint 10. The other end of the terminal pin 7 is fixed to the insulator (see FIG. 7). The terminal pin 7 on which the joint portion 10 is formed is inserted into the through hole 11 from the stator 21 side and pulled out to the top surface side of the terminal block 1. That is, the diameter of the through hole 11 needs to be long enough for the joint 10 to penetrate. In the present embodiment, the diameter of the through hole 11 is the diameter of the through hole 11 ≧ (the diameter of the winding 8 × 2 + the diameter of the terminal pin 7) × 1.2. Here, 1.2 is a coefficient, and the diameter of the winding 8 is the case where the overlapping of the windings 8 is removed. That is, when winding the winding 8 on the terminal pin 7, it is necessary to further increase the diameter of the through hole 11. Moreover, the diameter of the terminal pin 7 here is the diameter of the cross section of the terminal pin 7 in the direction perpendicular to the central axis x. For example, if the cross section is a circle, the diameter of the circle is the diameter of the terminal pin 7. Further, if the cross section is a polygon, the diameter of the terminal pin 7 is set to the maximum length such as the diagonal of the polygon. The reason why the coefficient is set to 1.2 is to sufficiently secure a clearance 17 that is a gap between the joint portion 10 and the through hole 11. When the coefficient is increased, the clearance 17 is increased, so that the surface tension for preventing dripping from the through hole 11 on the synthetic resin 16 (see FIG. 5) injected from the synthetic resin injection groove 4 does not function. On the other hand, when the clearance 17 is reduced, the difficulty level when the terminal pin 7 is inserted into the through hole 11 is increased. Therefore, when the terminal pin 7 is inserted into the through hole 11, the joint portion 10 is likely to come into contact with the inner peripheral surface of the through hole 11, and there is a concern that the protection of the winding 8 by the joining solder 9 is insufficient. . Further, the application range of the bonding solder 9 at the lower portion in the axial direction of the bonding portion 10 is less than the lowermost surface 32 of the through hole 11. The reason will be described later.
　上記で述べたように、接合部１０が貫通孔１１を貫通し、すなわち端子ピン７が貫通孔１１に端子台１の底面２４側から開口天面３側に向けて（中心軸ｘに沿って）挿入される（貫通工程）。その後、接続端子１５が開口天面３側から端子ピン７の端部に嵌め込まれる。この状態では、端子ピン７の端部が接続端子１５の上面３３よりもさらに上方に突き出た状態となっている。また、接続端子１５の底面側の下端３４は、開口天面３と同一平面上に位置する。この状態で、接合部１０と接続端子１５とを接続する準備が完了する。 As described above, the joint portion 10 penetrates the through hole 11, that is, the terminal pin 7 extends from the bottom surface 24 side of the terminal block 1 toward the opening top surface 3 side (along the central axis x). ) Is inserted (penetration process). Thereafter, the connection terminal 15 is fitted into the end portion of the terminal pin 7 from the opening top surface 3 side. In this state, the end of the terminal pin 7 protrudes further upward than the upper surface 33 of the connection terminal 15. Further, the lower end 34 on the bottom surface side of the connection terminal 15 is located on the same plane as the opening top surface 3. In this state, preparation for connecting the joint 10 and the connection terminal 15 is completed.
　続いて、図５を用いて接合部１０と接続端子１５との接続手順を説明する。なお図５は、実施の形態に係る合成樹脂注入後を示す凹部２の断面図である。 Subsequently, a connection procedure between the joint 10 and the connection terminal 15 will be described with reference to FIG. FIG. 5 is a cross-sectional view of the recess 2 showing the synthetic resin after injection according to the embodiment.
　図４に示した状態とした後、端子ピン７及び接続端子１５の上面３３に接続用はんだ１４を塗布する。これにより、端子ピン７と接続端子１５が接続用はんだ１４で接続される。つまり、接続端子１５を、接続端子１５の底面側下端が開口天面３と同一平面上に位置するように設置し、接続端子１５と端子ピン７とを接続用はんだ１４ではんだ接続する（接続工程）。この際、接続用はんだ１４が端子ピン７の端部を完全に覆うことで、接続端子１５と接合用はんだ９との間隙からの湿気などの侵入を防止できる。つまり、接合部１０を接続用はんだ１４で覆うことで、接合部１０を湿気などから保護することができる。また、接続端子１５の上部に接続用はんだ１４を積み上げることで、接続用はんだ１４の重みにより、接続端子１５の中央開口から接合部１０に沿って開口天面３よりも下方に接続用はんだ１４が侵入する。 After the state shown in FIG. 4, the connecting solder 14 is applied to the upper surfaces 33 of the terminal pins 7 and the connecting terminals 15. Thereby, the terminal pin 7 and the connection terminal 15 are connected by the connecting solder 14. That is, the connection terminal 15 is installed so that the lower end on the bottom surface side of the connection terminal 15 is located on the same plane as the opening top surface 3, and the connection terminal 15 and the terminal pin 7 are soldered with the connection solder 14 (connection) Process). At this time, since the connecting solder 14 completely covers the end portions of the terminal pins 7, it is possible to prevent intrusion of moisture or the like from the gap between the connecting terminal 15 and the bonding solder 9. That is, by covering the joint portion 10 with the connecting solder 14, the joint portion 10 can be protected from moisture and the like. Further, by stacking the connection solder 14 on the connection terminal 15, the connection solder 14 extends from the central opening of the connection terminal 15 to the lower side of the opening top surface 3 along the joint 10 due to the weight of the connection solder 14. Invades.
　次に接続工程後に合成樹脂注入溝４より合成樹脂１６を注入する。注入した合成樹脂１６は、ハッチング範囲３０に充填される（注入工程）。ここで、合成樹脂注入溝４の起点２６は接続端子１５の最外周よりもさらに中心軸ｘより遠い位置にあるので、合成樹脂注入溝４の上方、つまり矢印３１方向より合成樹脂１６を注入可能である。 Next, the synthetic resin 16 is injected from the synthetic resin injection groove 4 after the connecting step. The injected synthetic resin 16 is filled in the hatching range 30 (injection process). Here, since the starting point 26 of the synthetic resin injection groove 4 is further from the center axis x than the outermost periphery of the connection terminal 15, the synthetic resin 16 can be injected from above the synthetic resin injection groove 4, that is, from the direction of the arrow 31. It is.
　注入された合成樹脂１６は、凹部２の底面２４に流入することで射出速度が低減される。そのため、合成樹脂１６を充填する際に凹部２内に空隙が発生することを抑制できる。これにより、凹部２内への合成樹脂１６の充填量を一定に保つことができるため、品質向上に貢献することができる。また、図３Ａで示したように溝幅２９が中心軸ｘに近づくにつれて徐々に広くなっているため、合成樹脂１６の注入圧を高くしても中心軸ｘに向けて注入圧が拡散する。すなわち、合成樹脂１６が、合成樹脂注入溝４で溢れてしまうといったことを抑制することができる。当然ながら、注入圧を高くできるため、注入完了までに必要な時間も短縮される。 The injected synthetic resin 16 flows into the bottom surface 24 of the recess 2 to reduce the injection speed. Therefore, it is possible to suppress the generation of voids in the recess 2 when the synthetic resin 16 is filled. Thereby, since the filling amount of the synthetic resin 16 into the recess 2 can be kept constant, it can contribute to quality improvement. Further, as shown in FIG. 3A, since the groove width 29 gradually increases as it approaches the central axis x, the injection pressure diffuses toward the central axis x even if the injection pressure of the synthetic resin 16 is increased. That is, it is possible to prevent the synthetic resin 16 from overflowing in the synthetic resin injection groove 4. Of course, since the injection pressure can be increased, the time required to complete the injection is also shortened.
　底面２４に流入した合成樹脂１６は、端子ピン７を回折しながら抑制壁５により合成樹脂溜まり部１２に堆積する。合成樹脂溜まり部１２に堆積した合成樹脂１６は、底面２４より中心軸ｘ方向上部、つまり開口天面３方向へ充填される。さらに合成樹脂１６を注入すると、合成樹脂１６は、充填量確認溝６より流出し、開口天面３よりも上部へ膨出する。また、合成樹脂注入溝４においても合成樹脂１６が開口天面３よりも上部へ膨出する。ここで、注入された合成樹脂１６のうち、開口天面３よりも上部へ膨出した部分を合成樹脂膨出部３５と呼ぶ。合成樹脂膨出部３５は、好ましくは接続端子１５の下端３４から接続端子１５の厚みの２０％の位置まで、より好ましくは接続端子１５の上面３３まで、若しくは接続端子１５と接続用はんだ１４の界面まで膨出させるとよい。これにより、たとえば接続端子１５が多少変形していることで、開口天面３と接続端子１５の下端３４が同一平面でなく、開口天面３と接続端子１５の間に空隙が生じたとしても、合成樹脂１６によって空隙を埋めることができる。 The synthetic resin 16 that has flowed into the bottom surface 24 is deposited on the synthetic resin reservoir 12 by the suppression wall 5 while diffracting the terminal pin 7. The synthetic resin 16 deposited on the synthetic resin reservoir portion 12 is filled from the bottom surface 24 in the upper part of the central axis x direction, that is, in the direction of the opening top surface 3. When the synthetic resin 16 is further injected, the synthetic resin 16 flows out from the filling amount confirmation groove 6 and bulges upward from the opening top surface 3. In the synthetic resin injection groove 4, the synthetic resin 16 bulges upward from the opening top surface 3. Here, a portion of the injected synthetic resin 16 that bulges upward from the opening top surface 3 is referred to as a synthetic resin bulge portion 35. The synthetic resin bulge 35 is preferably from the lower end 34 of the connection terminal 15 to a position 20% of the thickness of the connection terminal 15, more preferably to the upper surface 33 of the connection terminal 15, or between the connection terminal 15 and the connection solder 14. It is good to swell to the interface. Thereby, for example, even if the connection terminal 15 is slightly deformed, the opening top surface 3 and the lower end 34 of the connection terminal 15 are not coplanar, and a gap is generated between the opening top surface 3 and the connection terminal 15. The gap can be filled with the synthetic resin 16.
　なお、抑制壁５を設けているため、合成樹脂１６の注入圧を高くしても抑制壁５にて合成樹脂１６の勢いが抑えられる。そのため、注入圧を高くしたことにより、充填量確認溝６より合成樹脂１６が勢いあまって外周方向に溢れ出ることを抑制することができる。 In addition, since the suppression wall 5 is provided, even if the injection pressure of the synthetic resin 16 is increased, the momentum of the synthetic resin 16 can be suppressed by the suppression wall 5. For this reason, by increasing the injection pressure, it is possible to suppress the synthetic resin 16 from rushing from the filling amount confirmation groove 6 and overflowing in the outer peripheral direction.
　また、充填量確認溝６は、合成樹脂注入溝４よりも掘り込みが浅いため、合成樹脂１６の必要量を減少させ、コスト削減に寄与している。 Also, since the filling amount confirmation groove 6 is shallower than the synthetic resin injection groove 4, the required amount of the synthetic resin 16 is reduced, which contributes to cost reduction.
　底面２４より中心軸ｘ方向下部においては、射出速度が低減された合成樹脂１６が接合部１０及び貫通孔１１によって形成されたクリアランス１７に流れ込む。流れ込んだ合成樹脂１６は、その後、接合部１０を全周にわたって包み込む。本実施の形態では、クリアランス１７の大きさを適切な大きさに設定している。そのため、クリアランス１７に流れ込み、接合部１０を全周にわたって包み込んだ合成樹脂１６には表面張力が働く。よって、貫通孔１１から下方への合成樹脂１６の漏れを防止することができる。また、本実施の形態では、接合部１０の接合用はんだ９の範囲を、貫通孔１１の最下面３２としているので、接合部１０の下端が合成樹脂１６によって完全に包み込まれる。このため、接合部１０を湿気などから確実に保護することができ、品質の向上が図れる。 In the lower part of the central axis x direction from the bottom surface 24, the synthetic resin 16 with a reduced injection speed flows into the clearance 17 formed by the joint 10 and the through hole 11. The synthetic resin 16 that has flowed in then wraps the joint 10 over the entire circumference. In the present embodiment, the size of the clearance 17 is set to an appropriate size. Therefore, the surface tension acts on the synthetic resin 16 that flows into the clearance 17 and wraps the joint 10 over the entire circumference. Therefore, leakage of the synthetic resin 16 downward from the through hole 11 can be prevented. In the present embodiment, the range of the solder 9 for joining of the joint portion 10 is the lowermost surface 32 of the through hole 11, so that the lower end of the joint portion 10 is completely encased by the synthetic resin 16. For this reason, the junction part 10 can be reliably protected from moisture and the like, and quality can be improved.
　さらに、合成樹脂注入溝４に対向して充填量確認溝６が設けられており、対向起点２７は接続端子１５の最外周よりもさらに中心軸ｘから離れた位置にある。そのため、十分な量の合成樹脂１６が凹部２、合成樹脂注入溝４、充填量確認溝６に充填されたかどうか、目視で確認可能となる。つまり、合成樹脂１６の不十分な充填により接続端子１５の下面に空隙が形成されてしまうことを防止可能となる。 Furthermore, a filling amount confirmation groove 6 is provided opposite to the synthetic resin injection groove 4, and the opposed starting point 27 is further away from the central axis x than the outermost periphery of the connection terminal 15. Therefore, it is possible to visually confirm whether or not a sufficient amount of the synthetic resin 16 is filled in the concave portion 2, the synthetic resin injection groove 4, and the filling amount confirmation groove 6. That is, it is possible to prevent a gap from being formed on the lower surface of the connection terminal 15 due to insufficient filling of the synthetic resin 16.
　なお、本実施の形態では、接続端子１５を端子ピン７とははんだ接続した後に合成樹脂１６を注入している。しかしながら、本実施の形態とは異なり、合成樹脂１６を注入した後に接続端子１５を端子ピン７とはんだ接続する場合、接続用はんだ１４の熱により合成樹脂１６が塑性変形してしまう。これは、一般的に、はんだの溶融温度に対し合成樹脂の耐熱温度の方が低いためである。つまり、合成樹脂１６を注入した後に接続端子１５を端子ピン７とはんだ接続すると、合成樹脂１６の塑性変形によって本来の機能の発揮が阻害される恐れがある。 In this embodiment, the synthetic resin 16 is injected after the connection terminal 15 is solder-connected to the terminal pin 7. However, unlike the present embodiment, when the connecting terminal 15 is soldered to the terminal pin 7 after the synthetic resin 16 is injected, the synthetic resin 16 is plastically deformed by the heat of the connecting solder 14. This is because the heat-resistant temperature of the synthetic resin is generally lower than the melting temperature of the solder. That is, if the connection terminal 15 is soldered to the terminal pin 7 after the synthetic resin 16 is injected, the plastic resin deformation of the synthetic resin 16 may hinder the original function.
　図６は、端子ピン７と接続端子１５とを接続した状態を天面側から見た平面図である。また図７は、端子ピン７と接続端子１５とを接続した状態の電動機２０の部分断面図である。図７における部分断面は、図１のＡ－Ａ線におけるものである。 FIG. 6 is a plan view of the state in which the terminal pins 7 and the connection terminals 15 are connected as seen from the top side. FIG. 7 is a partial cross-sectional view of the electric motor 20 in a state where the terminal pins 7 and the connection terminals 15 are connected. The partial cross section in FIG. 7 is taken along the line AA in FIG.
　図６に示すように、端子ピン７と接続端子１５を接続した状態において、十分な量の合成樹脂１６が合成樹脂注入溝４から注入された場合、合成樹脂注入溝４及び充填量確認溝６の形状（台形）が浮かび上がる。これにより、十分な合成樹脂１６が充填されたことが目視で確認可能となる。また、合成樹脂１６を開口天面３（図５参照）よりも上部へ膨出させた場合には、合成樹脂注入溝４及び充填量確認溝６の形状よりも周囲にはみ出した状態で広範囲にわたって合成樹脂１６を確認できる。これにより合成樹脂１６が開口天面３まで十分に充填されたこと、及び開口天面３よりも上部へ膨出したことも目視で確認可能となる。膨出させることで、図７に示すように、接続端子１５の下端３４、すなわち開口天面３まで十分に合成樹脂１６が行き届くことが理解できる。 As shown in FIG. 6, when a sufficient amount of the synthetic resin 16 is injected from the synthetic resin injection groove 4 in a state where the terminal pin 7 and the connection terminal 15 are connected, the synthetic resin injection groove 4 and the filling amount confirmation groove 6. The shape (trapezoid) appears. This makes it possible to visually confirm that sufficient synthetic resin 16 has been filled. Further, when the synthetic resin 16 is bulged upward from the opening top surface 3 (see FIG. 5), it extends over a wide range in a state of protruding beyond the shape of the synthetic resin injection groove 4 and the filling amount confirmation groove 6. The synthetic resin 16 can be confirmed. As a result, it is possible to visually confirm that the synthetic resin 16 is sufficiently filled up to the opening top surface 3 and that the synthetic resin 16 bulges upward from the opening top surface 3. As shown in FIG. 7, it can be understood that the synthetic resin 16 can reach the lower end 34 of the connection terminal 15, that is, the opening top surface 3 sufficiently.
　また、本発明に係る端子台１を備えた電動機は、送風装置などの電動機として使用できる。送風装置としては、例えば、扇風機や換気扇などが挙げられる。 Moreover, the electric motor provided with the terminal block 1 according to the present invention can be used as an electric motor such as a blower. As an air blower, a fan, a ventilation fan, etc. are mentioned, for example.
　（変形例）
　以上、実施の形態に係る端子台について説明したが、本発明は上記実施の形態に限定されない。本発明の趣旨を逸脱しない限り、当業者が思いつく各種変形を上記実施の形態に施したものも、本発明の範囲内に含まれる。 (Modification)
The terminal block according to the embodiment has been described above, but the present invention is not limited to the above embodiment. Unless it deviates from the meaning of this invention, what made the said embodiment various deformation | transformation which those skilled in the art think is also included in the scope of the present invention.
　図８は、変形例に係る凹部２の螺旋部１３を示す側断面図である。図８に示すように、凹部２は、側面に、開口天面３から底面２４の範囲で螺旋部１３を備える。螺旋部１３の形状に関しては、例えば図８に示す形状、すなわち注入した合成樹脂１６を開口天面３側から底面２４方向への移動を促すものであればよい。つまり、螺旋部１３の凹凸及び螺旋溝間隔は問わない。 FIG. 8 is a side sectional view showing the spiral portion 13 of the recess 2 according to a modification. As shown in FIG. 8, the recess 2 includes a spiral portion 13 on the side surface in the range from the opening top surface 3 to the bottom surface 24. As for the shape of the spiral portion 13, for example, the shape shown in FIG. 8, that is, any material that promotes the movement of the injected synthetic resin 16 from the opening top surface 3 side toward the bottom surface 24 direction may be used. That is, the unevenness of the spiral portion 13 and the interval between the spiral grooves are not limited.
　螺旋部１３を設けることにより、合成樹脂１６を注入した際における合成樹脂１６の底面２４への移動がスムーズとなる。これにより、凹部２内における空隙発生を一層抑制することができ、品質向上に貢献することができる。 By providing the spiral portion 13, the movement of the synthetic resin 16 to the bottom surface 24 when the synthetic resin 16 is injected becomes smooth. Thereby, generation | occurrence | production of the space | gap in the recessed part 2 can be suppressed further, and it can contribute to quality improvement.
　また、本実施の形態に係る端子台１は、合成樹脂注入溝４と、充填量確認溝６という２つの溝を備えている。例えば、上記に記載したように、凹部２内に螺旋部１３などを設けることで、合成樹脂１６を凹部２内に注入する際に空隙の発生を抑制することができれば、溝は１つのみであってもよい。 Also, the terminal block 1 according to the present embodiment includes two grooves, a synthetic resin injection groove 4 and a filling amount confirmation groove 6. For example, as described above, by providing the spiral portion 13 or the like in the concave portion 2, if the generation of voids can be suppressed when the synthetic resin 16 is injected into the concave portion 2, there is only one groove. There may be.
　また、本実施の形態に係る端子台１は、合成樹脂注入溝４と充填量確認溝６が、中心軸ｘを挟んで対向するように設けられている。例えば、合成樹脂注入溝４から注入された合成樹脂１６が凹部２内に充填された後、充填量確認溝６に流入する構成になっていれば、合成樹脂注入溝４と充填量確認溝６とは対向して設けなくてもよい。 Further, the terminal block 1 according to the present embodiment is provided such that the synthetic resin injection groove 4 and the filling amount confirmation groove 6 face each other with the central axis x interposed therebetween. For example, if the synthetic resin 16 injected from the synthetic resin injection groove 4 is filled into the recess 2 and then flows into the filling amount confirmation groove 6, the synthetic resin injection groove 4 and the filling amount confirmation groove 6 are configured. It does not have to be provided opposite to.
　本発明に係る電動機用端子台または電動機は、異種金属の接合部の保護を可能とするため、家電機器等に使用される電動機用端子台または電動機として有用である。 The motor terminal block or the electric motor according to the present invention is useful as a motor terminal block or an electric motor used for home appliances and the like because it can protect the junction of dissimilar metals.
　１　　端子台
　２　　凹部
　３　　開口天面
　４　　合成樹脂注入溝
　５　　抑制壁
　６　　充填量確認溝
　７　　端子ピン
　８　　巻線
　９　　接合用はんだ
　１０，１０５　　接合部
　１１　　貫通孔
　１２　　合成樹脂溜まり部
　１３　　螺旋部
　１４　　接続用はんだ
　１５　　接続端子
　１６　　合成樹脂
　１７　　クリアランス
　１８　　鍔部
　２０　　電動機
　２１　　ステータ
　２２　　継鉄部
　２３　　接続部
　２４　　底面
　２５　　周縁
　２６　　起点
　２７　　対向起点
　２８　　逆側面
　２９　　溝幅
　３０　　ハッチング範囲
　３１　　矢印
　３２　　最下面
　３３　　上面
　３４　　下端
　３５　　合成樹脂膨出部 DESCRIPTION OF SYMBOLS 1 Terminal block 2 Recessed part 3 Opening top surface 4 Synthetic resin injection groove 5 Control wall 6 Filling amount confirmation groove 7 Terminal pin 8 Winding 9 Solder for joining 10, 105 Joining part 11 Through-hole 12 Synthetic resin reservoir part 13 Spiral part 14 Connection Solder 15 Connection terminal 16 Synthetic resin 17 Clearance 18 Eager section 20 Motor 21 Stator 22 Relay section 23 Connection section 24 Bottom face 25 Peripheral 26 Origin 27 Opposite origin 28 Reverse side 29 Groove width 30 Hatching range 31 Arrow 32 Bottom surface 33 Top surface 34 Lower end 35 Synthetic resin bulge

Claims (10)

  1. 巻線が絡げられた端子ピンを貫通するための貫通孔を底面に設けた凹部と、
    前記凹部の開口天面における周縁よりもさらに前記凹部の中心軸から離れた位置を起点として前記凹部の前記起点側の側面まで掘り込まれた合成樹脂注入溝と、
    前記起点と前記中心軸を挟んで対向する位置を対向起点として前記凹部の前記対向起点側の側面である逆側面まで掘り込まれた充填量確認溝と、
    を備えた電動機用端子台。     A recess provided on the bottom surface with a through hole for penetrating the terminal pin with which the winding is entangled;
    A synthetic resin injection groove dug into the side surface of the concave portion starting from a position further away from the central axis of the concave portion than the peripheral edge of the opening top surface of the concave portion;
    A filling amount confirmation groove dug to the opposite side surface that is the side surface on the opposite origin side of the recess, with the origin and the position facing the central axis across the center axis;
    Electric motor terminal block.
  2. 前記合成樹脂注入溝の掘り込み深さよりも前記充填量確認溝の掘り込み深さを浅くすることで合成樹脂注入時における前記合成樹脂の流れの勢いを抑えるための抑制壁を前記充填量確認溝側に備えた請求項１記載の電動機用端子台。 The filling amount confirmation groove has a suppression wall for suppressing the momentum of the flow of the synthetic resin at the time of synthetic resin injection by making the digging depth of the filling amount confirmation groove shallower than the digging depth of the synthetic resin injection groove. The terminal block for electric motors according to claim 1 provided on the side.
  3. 前記底面の径を前記貫通孔の径よりも大きくすることで前記底面に合成樹脂を溜めるための合成樹脂溜まり部を備えた請求項１に記載の電動機用端子台。 2. The motor terminal block according to claim 1, further comprising a synthetic resin reservoir for collecting synthetic resin on the bottom surface by making the diameter of the bottom surface larger than the diameter of the through hole.
  4. 前記凹部の側面に合成樹脂の前記開口天面側から前記底面方向への移動を促す螺旋部を備えた請求項１に記載の電動機用端子台。 The terminal block for an electric motor according to claim 1, further comprising a spiral portion that facilitates movement of the synthetic resin from the opening top surface side toward the bottom surface on a side surface of the concave portion.
  5. 前記貫通孔の径は、
    　貫通孔の径　≧　（巻線の径×２＋端子ピンの径）×１．２
    を満たす請求項１に記載の電動機用端子台。     The diameter of the through hole is
    Diameter of through hole ≥ (winding diameter x 2 + terminal pin diameter) x 1.2
    The terminal block for electric motors of Claim 1 which satisfy | fills.
  6. 請求項１に記載の電動機用端子台と、
    前記貫通孔に前記底面から前記開口天面に向けて貫通する前記端子ピンと、
    前記開口天面と同一平面を端子の下端として前記端子ピンとはんだ接続された接続端子とを備えた電動機。     A terminal block for an electric motor according to claim 1;
    The terminal pin penetrating the through hole from the bottom surface toward the opening top surface;
    An electric motor comprising a connection terminal soldered to the terminal pin with the same plane as the top of the opening as a lower end of the terminal.
  7. 前記凹部内には前記合成樹脂注入溝から合成樹脂が注入されており、前記合成樹脂は、前記開口天面の同一平面上よりも上部に膨出する合成樹脂膨出部を備えた請求項６に記載の電動機。 The synthetic resin is injected into the recess from the synthetic resin injection groove, and the synthetic resin includes a synthetic resin bulging portion that bulges upward from the same plane of the opening top surface. The electric motor described in 1.
  8. 前記合成樹脂膨出部は、前記接続端子の厚みの２０％以上の位置まで膨出した請求項７記載の電動機。 The electric motor according to claim 7, wherein the synthetic resin bulge portion bulges to a position of 20% or more of the thickness of the connection terminal.
  9. 請求項６に記載の電動機を備えた送風装置。 A blower comprising the electric motor according to claim 6.
  10. 請求項１に記載の電動機用端子台における前記貫通孔に前記底面から前記開口天面に向けて前記端子ピンを貫通させる貫通工程と、前記貫通工程後に接続端子を、前記接続端子の下端が前記開口天面と同一平面となるように設置して前記端子ピンとはんだ接続する接続工程と、前記接続工程後に前記合成樹脂注入溝から合成樹脂を注入する注入工程と、を備えた端子ピンと接続端子との接続方法。 The penetration terminal in the terminal block for an electric motor according to claim 1, a penetration step of penetrating the terminal pin from the bottom surface toward the opening top surface, a connection terminal after the penetration step, and a lower end of the connection terminal is the A terminal pin and a connection terminal, each of which includes a connecting step of being installed so as to be flush with the top surface of the opening and being solder-connected to the terminal pin; and an injection step of injecting a synthetic resin from the synthetic resin injection groove after the connecting step; Connection method.
PCT/JP2017/020454 2016-06-08 2017-06-01 Terminal block for electric motor, electric motor, blower device, and method for connecting terminal pin and connection terminal WO2017213020A1 (en)

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JP7170171B2 (en) 2018-11-26 2022-11-14 パナソニックＩｐマネジメント株式会社 Stator, motor and blower

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10201160A (en) * 1997-01-16 1998-07-31 Matsushita Seiko Co Ltd Stator of brushless motor
JP2013188048A (en) * 2012-03-09 2013-09-19 Panasonic Corp Electric motor, and ceiling fan and air-blower including the same
JP2015130785A (en) * 2013-12-02 2015-07-16 デンソートリム株式会社 Magnet type generator
WO2016067530A1 (en) * 2014-10-27 2016-05-06 パナソニックＩｐマネジメント株式会社 Electric motor and ceiling fan equipped with same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0436919A (en) * 1990-05-31 1992-02-06 Daiichi Denki Kk Sealing method for terminal part
JP4565337B2 (en) * 2005-11-24 2010-10-20 住友電装株式会社 connector
CN102782951B (en) * 2010-03-03 2015-09-02 Ex想士电子有限公司 The connection device of electronic equipment and jockey

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10201160A (en) * 1997-01-16 1998-07-31 Matsushita Seiko Co Ltd Stator of brushless motor
JP2013188048A (en) * 2012-03-09 2013-09-19 Panasonic Corp Electric motor, and ceiling fan and air-blower including the same
JP2015130785A (en) * 2013-12-02 2015-07-16 デンソートリム株式会社 Magnet type generator
WO2016067530A1 (en) * 2014-10-27 2016-05-06 パナソニックＩｐマネジメント株式会社 Electric motor and ceiling fan equipped with same

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